/**
 * Copyright (C) 2011 Domenico Briganti <dometec@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package it.webrules.deploymanager.webapp.utils;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class DeepCopy {

	/**
	 * Returns a copy of the object, or null if the object cannot
	 * be serialized.
	 */
	public static <T> T copy(T orig) {

		T obj = null;

		try {
			// Write the object out to a byte array
			FastByteArrayOutputStream fbos = new FastByteArrayOutputStream();
			ObjectOutputStream out = new ObjectOutputStream(fbos);
			out.writeObject(orig);
			out.flush();
			out.close();

			// Retrieve an input stream from the byte array and read
			// a copy of the object back in.
			ObjectInputStream in = new ObjectInputStream(fbos.getInputStream());
			obj = (T) in.readObject();

		} catch (IOException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException cnfe) {
			cnfe.printStackTrace();
		}

		return obj;
	}

}
